I think you are finally understanding what I am saying. Of course it is possible to translate all scientific concepts into any human language, just that in practice it is not done since the return is minimal and the cost high. Rather than waste an enormous amount of resources on translating every paper, conference proceeding, report and patent into the thousands of different human languages we have settled on just using English.

Any concept (and all the required prerequisite concepts) that have not been translated to the new language can’t be communicated in that language. Nothing more.

The only interesting aspect of all this is that it makes a large chunk of human thought only able to be communicated effectively in one language. It would probably would have been ideal to have settled on a synthetic language designed specifically for science communication (mathematics is part of the way there), but history didn’t turn out that way.